[专业]Implementation of Multipath and Multiple Description Coding in OLSR

 

优化链路状态协议OLSR中多路径以及多重描述编码的实现

Jiazi Yi, Eddy Cizeron, Salima Hamma, Benoît Parrein and Pascal Lesage

(本文收录于加拿大渥太华举行的第四届OLSR会议论文集. This is a proceeding of 4th OLSR Interop/Workshop, Ottawa, Canada)

摘要: 本文讨论了多路径方法以及多重描述编码在OLSR协议中的实现. 它基于链路状态协议, 使用周期性的消息交换来维护网络的拓扑信息. 同时, 它使用反应式的方法来更新路由表, 并将数据包以源路由的方式, 通过多路径将其发送到目的节点. 如果检测到失效链路, 路由算法将自动恢复链路. 考虑到无线网络的不确定性, 我们使用了多重描述编码来提高传输的可靠性. 同时, 提出了不同的方法将冗余信息分配到不同的路径中. 在NS2下的模拟证明新的协议可以有效地提高网络的性能. 本文的最后提出了MP-OLSR的实现方法.

关键字: 无线自组网, 链路状态协议, 多路径协议, 多重描述编码

Abstract —In this paper we discussed the application and the implementation of multipath routing and multiple description coding (MDC) extension of OLSR, called MP-OLSR. It is based on the link state algorithm and employs periodic exchange of messages to maintain topology information of the networks. In the mean time, it updates the routing table in an on-demand scheme and forwards the packets in multiple paths which have been determined at the source.  If a link failure is detected, the algorithm recovers the route automatically. Concerning the instability of the wireless networks, the multiple description coding is used to improve reliability of the network transmission, and several methods are proposed to allocate the redundancy in different paths. The simulation in NS2 shows that the new protocol can effectively improve the performance of the networks. The implementation of MP-OLSR is also proposed in the end.

Index Terms — ad hoc networks, link state protocol, multipath routing, multiple description coding

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1 Response to [专业]Implementation of Multipath and Multiple Description Coding in OLSR

  1. liao chan says:

    在国外真好啊~羡慕ing

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